J/MNRAS/463/1446ivo://CDS.VizieR/J/MNRAS/463/1446doi:10.26093/cds/vizier.74631446CDSNayak P.K.Subramaniam A.Choudhury S.Indu G.Sagar R.2024-08-16T20:18:59Z2018-06-25T14:50:48ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmagellanic-cloudsstellar-associationsstellar-agesWe have introduced a semi-automated quantitative method to estimate the age and reddening of 1072 star clusters in the Large Magellanic Cloud (LMC) using the Optical Gravitational Lensing Experiment (OGLE) III survey data. This study brings out 308 newly parameterised clusters. In a first of its kind, the LMC clusters are classified into groups based on richness/mass as very poor, poor, moderate and rich clusters, similar to the classification scheme of open clusters in the Galaxy. A major cluster formation episode is found to happen at 125+/-25Myr in the inner LMC. The bar region of the LMC appears prominently in the age range 60-250Myr and is found to have a relatively higher concentration of poor and moderate clusters. The eastern and the western ends of the bar are found to form clusters initially, which later propagates to the central part. We demonstrate that there is a significant difference in the distribution of clusters as a function of mass, using a movie based on the propagation (in space and time) of cluster formation in various groups. The importance of including the low mass clusters in the cluster formation history is demonstrated. The catalog with parameters, classification, and cleaned and isochrone fitted CMDs of 1072 clusters, which are available as online material, can be further used to understand the hierarchical formation of clusters in selected regions of the LMC.2016MNRAS.463.1446Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/463/1446CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/389/678 : Catalogue of extended objects in Magellanic Cloudshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/463/1446https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/463/1446http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/463/1446https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/463/1446https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/463/1446http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/463/1446GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/463/1446/catalog (A catalog is 1072 LMC star clusters are presented here)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/463/1446/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/463/1446/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/463/1446/catalog?GETtext/xml+votable180.050000true69.08333-70.172780.0055555555555555564/2068 5/8263 8268-8269 8280 6/33045-33047 33049 33051 33080-33081 33084-33085 33104-33106 33124-33126 33128-33129 37416 37418 37504 37506-37507 37512-37514https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/463/1446?format=asciidefaultJ/MNRAS/463/1446/catalogA catalog is 1072 LMC star clusters are presented hereSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster namemeta.id;meta.maincharRAJ2000Central right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Central declination (J2000 (1)pos.eq.dec;meta.mainRadiusSize of the cluster (1)arcminphys.angSize;srcfloatE(V-I)Estimated reddeningmagphot.color.excessfloatlog(t)Estimated agelog(yr)time.agefloatlog(tG10)? Glatt et al. (2010, Cat. J/A+A/517/A50) estimation of agelog(yr)time.agefloatnullablel_log(tPU00)Limit flag on log(tPU00)meta.code.errorcharlog(tPU00)? Pietrzynski & Udalski (2000, Cat. J/AcA/50/337) estimation of agelog(yr)arith.zpfloatnullablelog(tPU00)2? Pietrzynski & Udalski (2000, Cat. J/AcA/50/337) estimation of agelog(yr)arith.zpfloatnullablelog(tPal16)? Palma et al. (2016, Cat. J/A+A/586/A41) earlier estimation of agelog(yr)time.agefloatnullablelog(tPal16)2? Palma et al. (2016, Cat. J/A+A/586/A41) estimation of agelog(yr)time.agefloatnullablelog(tP14)? Piatti et al. (2014A&A...570A..74P or 2015, Cat. J/MNRAS/454/839) earlier of agelog(yr)time.agefloatnullableGroupDesignated group number (I-V) of clustermeta.code.classchar